A.N. — Of course, Rowling would have the most mentioned ghost in the books have a Halloween Death Day. 'Cause that day isn't already cursed enough... and crowded canonically with tons of happenings.

304. Sir Nicholas de Mimsy-Porpington (Nearly Headless Nick)

If each house's ghost were in competition like the students with the House Cup, Nick feared he'd come last.

The Bloody Baron scored big intimidation points and was known well beyond Slytherin. The Grey Lady was Hogwarts' oldest tenant; the Ravenclaw's breadth of knowledge was unrivaled (if you could get her talking). The Fat Friar kindly welcomed all first years, Hufflepuff or not.

But Nick feared he was viewed only as a party trick, his worth measured solely by his comedic value. He'd earned his "Sir" title in life, but in death his respect was as spectral as his body.